Multiple Choice
What happens to the arrangement of water molecules as water melts and freezes?
13. Liquids, Solids & Intermolecular Forces
Phase Diagrams
Back13. Liquids, Solids & Intermolecular Forces
Phase Diagrams
- Multiple ChoiceWhich of the following elements is a gas at room temperature?
- Multiple Choice
The critical point of this substance occurs at what temperature?
- Multiple Choice
Arrow I corresponds to:
- Multiple Choice
What is the normal freezing point of this unknown substance?
- Multiple Choice
At what temperature can we no longer tell the difference between the liquid and gas phases?
- Multiple ChoiceWhich processes occur at the triple point?
- Multiple ChoiceThe ability for liquids to mix without separating into two phases is called _________.
- Multiple ChoiceFor a given substance:
- Multiple ChoiceConsider adding enough heat to a solid sample of a substance below its melting point to change the sample to the gas above its boiling point. Which of the following would involve no change in temperature of the sample as the described transition occurs?
- Multiple ChoiceCalculate the amount of heat (in J) required to heat 2.00 grams of ice from −12.0℃ to 88.0℃.
The heat of fusion of water is 6.02 kJ/mol, the specific heat capacity of ice is 2.09 J/g ▪℃ and the specific heat capacity of water is 4.184 J/g ▪℃. - Multiple ChoiceConsider the phase diagram below: What changes would the sample undergo as the sample moves from the temperature and pressure at point 'a' to the temperature and pressure at point 'b'?
- Open Question
Based on the phase diagram shown below, how will the melting point of the substance change if the pressure is increased above 1 atm?
- Open Question
In the phase diagram for water, indicate the direction that the solid–liquid and liquid–gas coexistence lines will move along the temperature axis after the addition of solute.
- Open Question
A gaseous substance turns directly into a solid. Which term describes this change?